CVE-2021-26855

Reference CISA's ED 21-02 (https://www.cisa.gov/news-events/directives/ed-21-02-mitigate-microsoft-exchange-premises-product-vulnerabilities) for further guidance and requirements. Note: The due date for addressing this vulnerability aligns with the requirements outlined in ED 21-02. https://nvd.nist.gov/vuln/detail/CVE-2021-26855

CWE-918

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26855

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26855

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26855

http://packetstormsecurity.com/files/161846/Microsoft-Exchange-2019-SSRF-Arbitrary-File-Write.html

http://packetstormsecurity.com/files/161938/Microsoft-Exchange-ProxyLogon-Remote-Code-Execution.html

http://packetstormsecurity.com/files/162610/Microsoft-Exchange-2019-Unauthenticated-Email-Download.html

http://packetstormsecurity.com/files/162736/Microsoft-Exchange-ProxyLogon-Collector.html